> NB my stanza for repeatedly writing non-null checks is:
> if( stringToCompare == null )
> stringToCompare = "";
> if( stringToCompare.equals("something") ) {
> ...
> }
becomes:
0 aload_0
1 ifnonnull 7
4 ldc #2 <String "">
6 astore_0
7 aload_0
8 ldc #3 <String "something">
10 invokevirtual #4 <Method boolean equals(java.lang.Object)>
13 ifeq ...
...
if("something".equals(stringToCompare) ) {
;
}
becomes:
0 ldc #3 <String "something">
2 aload_0
3 invokevirtual #4 <Method boolean equals(java.lang.Object)>
6 ifeq ...
...
In terms of clock cycles, if the value to be compared is null, your way is
20% slower. It is about 10% slower if the value to be compared is "" or a
non-matching valid string. It is only marginally slower if the values are
equal.
--- Noel
